Question

give reason why ice is wrapped in sawdust or woollen blanket

Answer 1

Hey mate !!

In summers, ice is wrapped in gunny bags or covered with saw dust. This is because the air in the fine pores of saw dust is an insulator of heat. This air do not allow heat from outside to pass to ice thereby ice do not melt quickly.

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Answer 2

In summer, ice is wrapped in a gunny bag or it is covered with saw dust. The air filled in the fine pores of saw dust is an insulator of heat. This air does not allow heat from outside to pass to the ice thereby preventing its melting.